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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+** File: nameshm1.c -- Test Named Shared Memory
+**
+** Description:
+** nameshm1 tests Named Shared Memory. nameshm1 performs two tests of
+** named shared memory.
+**
+** The first test is a basic test. The basic test operates as a single
+** process. The process exercises all the API elements of the facility.
+** This test also attempts to write to all locations in the shared
+** memory.
+**
+** The second test is a client-server test. The client-server test
+** creates a new instance of nameshm1, passing the -C argument to the
+** new process; this creates the client-side process. The server-side
+** (the instance of nameshm1 created from the command line) and the
+** client-side interact via inter-process semaphores to verify that the
+** shared memory segment can be read and written by both sides in a
+** synchronized maner.
+**
+** Note: Because this test runs in two processes, the log files created
+** by the test are not in chronological sequence; makes it hard to read.
+** As a temporary circumvention, I changed the definition(s) of the
+** _PUT_LOG() macro in prlog.c to force a flushall(), or equivalent.
+** This causes the log entries to be emitted in true chronological
+** order.
+**
+** Synopsis: nameshm1 [options] [name]
+**
+** Options:
+** -d Enables debug trace via PR_LOG()
+** -v Enables verbose mode debug trace via PR_LOG()
+** -w Causes the basic test to attempt to write to the segment
+** mapped as read-only. When this option is specified, the
+** test should crash with a seg-fault; this is a destructive
+** test and is considered successful when it seg-faults.
+**
+** -C Causes nameshm1 to start as the client-side of a
+** client-server pair of processes. Only the instance
+** of nameshm1 operating as the server-side process should
+** specify the -C option when creating the client-side process;
+** the -C option should not be specified at the command line.
+** The client-side uses the shared memory segment created by
+** the server-side to communicate with the server-side
+** process.
+**
+** -p <n> Specify the number of iterations the client-server tests
+** should perform. Default: 1000.
+**
+** -s <n> Size, in KBytes (1024), of the shared memory segment.
+** Default: (10 * 1024)
+**
+** -i <n> Number of client-side iterations. Default: 3
+**
+** name specifies the name of the shared memory segment to be used.
+** Default: /tmp/xxxNSPRshm
+**
+**
+** See also: prshm.h
+**
+** /lth. Aug-1999.
+*/
+
+#include <plgetopt.h>
+#include <nspr.h>
+#include <stdlib.h>
+#include <string.h>
+#include <private/primpl.h>
+
+#define SEM_NAME1 "/tmp/nameshmSEM1"
+#define SEM_NAME2 "/tmp/nameshmSEM2"
+#define SEM_MODE 0666
+#define SHM_MODE 0666
+
+#define NameSize (1024)
+
+PRIntn debug = 0;
+PRIntn failed_already = 0;
+PRLogModuleLevel msgLevel = PR_LOG_NONE;
+PRLogModuleInfo *lm;
+
+/* command line options */
+PRIntn optDebug = 0;
+PRIntn optVerbose = 0;
+PRUint32 optWriteRO = 0; /* test write to read-only memory. should crash */
+PRUint32 optClient = 0;
+PRUint32 optCreate = 1;
+PRUint32 optAttachRW = 1;
+PRUint32 optAttachRO = 1;
+PRUint32 optClose = 1;
+PRUint32 optDelete = 1;
+PRInt32 optPing = 1000;
+PRUint32 optSize = (10 * 1024 );
+PRInt32 optClientIterations = 3;
+char optName[NameSize] = "/tmp/xxxNSPRshm";
+
+char buf[1024] = "";
+
+
+static void BasicTest( void )
+{
+ PRSharedMemory *shm;
+ char *addr; /* address of shared memory segment */
+ PRUint32 i;
+ PRInt32 rc;
+
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Begin BasicTest" ));
+
+ if ( PR_FAILURE == PR_DeleteSharedMemory( optName )) {
+ PR_LOG( lm, msgLevel,
+ ("nameshm1: Initial PR_DeleteSharedMemory() failed. No problem"));
+ } else
+ PR_LOG( lm, msgLevel,
+ ("nameshm1: Initial PR_DeleteSharedMemory() success"));
+
+
+ shm = PR_OpenSharedMemory( optName, optSize, (PR_SHM_CREATE | PR_SHM_EXCL), SHM_MODE );
+ if ( NULL == shm )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Create: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Create: success: %p", shm ));
+
+ addr = PR_AttachSharedMemory( shm , 0 );
+ if ( NULL == addr )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Attach: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Attach: success: %p", addr ));
+
+ /* fill memory with i */
+ for ( i = 0; i < optSize ; i++ )
+ {
+ *(addr + i) = i;
+ }
+
+ rc = PR_DetachSharedMemory( shm, addr );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Detach: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Detach: success: " ));
+
+ rc = PR_CloseSharedMemory( shm );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Close: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Close: success: " ));
+
+ rc = PR_DeleteSharedMemory( optName );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Delete: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RW Delete: success: " ));
+
+ PR_LOG( lm, msgLevel,
+ ("nameshm1: BasicTest(): Passed"));
+
+ return;
+} /* end BasicTest() */
+
+static void ReadOnlyTest( void )
+{
+ PRSharedMemory *shm;
+ char *roAddr; /* read-only address of shared memory segment */
+ PRInt32 rc;
+
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Begin ReadOnlyTest" ));
+
+ shm = PR_OpenSharedMemory( optName, optSize, (PR_SHM_CREATE | PR_SHM_EXCL), SHM_MODE);
+ if ( NULL == shm )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Create: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Create: success: %p", shm ));
+
+
+ roAddr = PR_AttachSharedMemory( shm , PR_SHM_READONLY );
+ if ( NULL == roAddr )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Attach: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Attach: success: %p", roAddr ));
+
+ if ( optWriteRO )
+ {
+ *roAddr = 0x00; /* write to read-only memory */
+ failed_already = 1;
+ PR_LOG( lm, msgLevel, ("nameshm1: Wrote to read-only memory segment!"));
+ return;
+ }
+
+ rc = PR_DetachSharedMemory( shm, roAddr );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Detach: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Detach: success: " ));
+
+ rc = PR_CloseSharedMemory( shm );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Close: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Close: success: " ));
+
+ rc = PR_DeleteSharedMemory( optName );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Destroy: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: RO Destroy: success: " ));
+
+ PR_LOG( lm, msgLevel,
+ ("nameshm1: ReadOnlyTest(): Passed"));
+
+ return;
+} /* end ReadOnlyTest() */
+
+static void DoClient( void )
+{
+ PRStatus rc;
+ PRSem *sem1, *sem2;
+ PRSharedMemory *shm;
+ PRUint32 *addr;
+ PRInt32 i;
+
+ PR_LOG( lm, msgLevel,
+ ("nameshm1: DoClient(): Starting"));
+
+ sem1 = PR_OpenSemaphore( SEM_NAME1, 0, 0, 0 );
+ PR_ASSERT( sem1 );
+
+ sem2 = PR_OpenSemaphore( SEM_NAME2, 0, 0, 0 );
+ PR_ASSERT( sem1 );
+
+ shm = PR_OpenSharedMemory( optName, optSize, 0, SHM_MODE );
+ if ( NULL == shm )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Create: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Create: success: %p", shm ));
+
+ addr = PR_AttachSharedMemory( shm , 0 );
+ if ( NULL == addr )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Attach: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Attach: success: %p", addr ));
+
+ PR_LOG( lm, msgLevel,
+ ( "Client found: %s", addr));
+
+ PR_Sleep(PR_SecondsToInterval(4));
+ for ( i = 0 ; i < optPing ; i++ )
+ {
+ rc = PR_WaitSemaphore( sem2 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ (*addr)++;
+ PR_ASSERT( (*addr % 2) == 0 );
+ if ( optVerbose )
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Client ping: %d, i: %d", *addr, i));
+
+ rc = PR_PostSemaphore( sem1 );
+ PR_ASSERT( PR_FAILURE != rc );
+ }
+
+ rc = PR_CloseSemaphore( sem1 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_CloseSemaphore( sem2 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_DetachSharedMemory( shm, addr );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Detach: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Detach: success: " ));
+
+ rc = PR_CloseSharedMemory( shm );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Close: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: DoClient(): Close: success: " ));
+
+ return;
+} /* end DoClient() */
+
+static void ClientServerTest( void )
+{
+ PRStatus rc;
+ PRSem *sem1, *sem2;
+ PRProcess *proc;
+ PRInt32 exit_status;
+ PRSharedMemory *shm;
+ PRUint32 *addr;
+ PRInt32 i;
+ char *child_argv[8];
+ char buf[24];
+
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Begin ClientServerTest" ));
+
+ rc = PR_DeleteSharedMemory( optName );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Destroy: failed. No problem"));
+ } else
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Destroy: success" ));
+
+
+ shm = PR_OpenSharedMemory( optName, optSize, (PR_SHM_CREATE | PR_SHM_EXCL), SHM_MODE);
+ if ( NULL == shm )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Create: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Create: success: %p", shm ));
+
+ addr = PR_AttachSharedMemory( shm , 0 );
+ if ( NULL == addr )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Attach: Error: %ld. OSError: %ld", PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Attach: success: %p", addr ));
+
+ sem1 = PR_OpenSemaphore( SEM_NAME1, PR_SEM_CREATE, SEM_MODE, 0 );
+ PR_ASSERT( sem1 );
+
+ sem2 = PR_OpenSemaphore( SEM_NAME2, PR_SEM_CREATE, SEM_MODE, 1 );
+ PR_ASSERT( sem1 );
+
+ strcpy( (char*)addr, "FooBar" );
+
+ child_argv[0] = "nameshm1";
+ child_argv[1] = "-C";
+ child_argv[2] = "-p";
+ sprintf( buf, "%d", optPing );
+ child_argv[3] = buf;
+ child_argv[4] = optName;
+ child_argv[5] = NULL;
+
+ proc = PR_CreateProcess(child_argv[0], child_argv, NULL, NULL);
+ PR_ASSERT( proc );
+
+ PR_Sleep( PR_SecondsToInterval(4));
+
+ *addr = 1;
+ for ( i = 0 ; i < optPing ; i++ )
+ {
+ rc = PR_WaitSemaphore( sem1 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ (*addr)++;
+ PR_ASSERT( (*addr % 2) == 1 );
+ if ( optVerbose )
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server pong: %d, i: %d", *addr, i));
+
+
+ rc = PR_PostSemaphore( sem2 );
+ PR_ASSERT( PR_FAILURE != rc );
+ }
+
+ rc = PR_WaitProcess( proc, &exit_status );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_CloseSemaphore( sem1 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_CloseSemaphore( sem2 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_DeleteSemaphore( SEM_NAME1 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_DeleteSemaphore( SEM_NAME2 );
+ PR_ASSERT( PR_FAILURE != rc );
+
+ rc = PR_DetachSharedMemory( shm, addr );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Detach: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Detach: success: " ));
+
+ rc = PR_CloseSharedMemory( shm );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Close: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Close: success: " ));
+
+ rc = PR_DeleteSharedMemory( optName );
+ if ( PR_FAILURE == rc )
+ {
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Destroy: Error: %ld. OSError: %ld",
+ PR_GetError(), PR_GetOSError()));
+ failed_already = 1;
+ return;
+ }
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Server: Destroy: success" ));
+
+ return;
+} /* end ClientServerTest() */
+
+PRIntn main(PRIntn argc, char *argv[])
+{
+ {
+ /*
+ ** Get command line options
+ */
+ PLOptStatus os;
+ PLOptState *opt = PL_CreateOptState(argc, argv, "Cdvw:s:p:i:");
+
+ while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
+ {
+ if (PL_OPT_BAD == os) continue;
+ switch (opt->option)
+ {
+ case 'v': /* debug mode */
+ optVerbose = 1;
+ /* no break! fall into debug option */
+ case 'd': /* debug mode */
+ debug = 1;
+ msgLevel = PR_LOG_DEBUG;
+ break;
+ case 'w': /* try writing to memory mapped read-only */
+ optWriteRO = 1;
+ break;
+ case 'C':
+ optClient = 1;
+ break;
+ case 's':
+ optSize = atol(opt->value) * 1024;
+ break;
+ case 'p':
+ optPing = atol(opt->value);
+ break;
+ case 'i':
+ optClientIterations = atol(opt->value);
+ break;
+ default:
+ strcpy( optName, opt->value );
+ break;
+ }
+ }
+ PL_DestroyOptState(opt);
+ }
+
+ lm = PR_NewLogModule("Test"); /* Initialize logging */
+
+ PR_LOG( lm, msgLevel,
+ ( "nameshm1: Starting" ));
+
+ if ( optClient )
+ {
+ DoClient();
+ } else {
+ BasicTest();
+ if ( failed_already != 0 )
+ goto Finished;
+ ReadOnlyTest();
+ if ( failed_already != 0 )
+ goto Finished;
+ ClientServerTest();
+ }
+
+Finished:
+ if ( debug ) printf("%s\n", (failed_already)? "FAIL" : "PASS" );
+ return( (failed_already)? 1 : 0 );
+} /* main() */
+/* end instrumt.c */
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